A cultivar named pre-1984 but not to our knowledge described in sufficient detail for the name to be established. It may or may not have been related to either M. grandis subsp. grandis or to M. gakyidiana. In some accounts it was said to be a white form of M. grandis but in others a hybrid.

The cultivar was once grown by Major and Mrs Know-Finlay at Keillour Castle but no plants are now known to us under this name.

See also. M. grandis 'Edrom White' which is related to M. gakyidiana.

N.B. There is also a sheet labelled M. x beamishii at the British Museum submitted by Miss A. M. Dickson of Dumfriesshire which has white petals with a faint blue cast.